read my previous post i already answered your question

link isnt workin....

here's the thread though

https://g35driver.com/forums/intake-...-2003-g35.html

yeah thats the thread..sorry about that.

i didnt have any sound at work when i viewed this thread.but not that im at home omgosh that sounds so bad a$$

all the aftermarket has 3" outlet, would it fit without an adapter to our stock exhaust?

what do you mean?

from what I am seeing, the 07+ g35 sedan HR ypipe is a bit longer than the 07+ Z HR ypipe.

It will "physically" fit but not going to do you any good for flow dynamics perspectives. You are creating a discontinuous step change from 3" ID to 2.5" ID, which will create flow separation and hence turbulent flow. Common audible effect is Rasp ... and this is not something that you would want if your original intention of going for an aftermarket ypipe was performance gains.

At the end of the day, stick with a 07+ 350z ypipe if you are going to pair it up with a stock exhaust, or you can go to a full blown aftermarket exhaust.
If you reallly really really want to pair up your aftermarket ypipe with 3" ID to your stock midpipe with 2.5" ID, you can put a 3" -> 2.5" adapter (search Dr Gas).

I am installing the Nismo muffler with my HR Y pipe and stock mid pipe

That should be a good starting point =)

This is what i was wanting for my car,i love the sound of the stock exhaust but want to make it just a little louder without going to aftermarket system.This should help a little right?

yes this will help alittle.

HR y-pipe, 05/06 sedan midpipe, Revup airbox

From inside the car, WOT, TC/VDC on


30% throttle, cold night, cold pipes

this is what i am aiming for as well man,
i wish someone could put it on stock exhaust and make before and after video
i am already looking for one so if anyone sees one around please let me know:0
thanks.

I've got a video of stock exhaust with motordyne spacer...if anyone wants me to post it...let me know how to..n i will..I'm waiting on a phone call from an 07 350z owner to trade out y pipes...they have a nismo exhaust...i was going to post it after the trade but i can do it early